From 46d485590195aaccd8c6c3b305a1a3f8f3cb4b4f Mon Sep 17 00:00:00 2001
From: hendricks266 <hendricks266@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Tue, 26 Nov 2019 08:24:10 +0000
Subject: [PATCH] Fix the ifcrc token: 0 is a valid CRC32 result!

git-svn-id: https://svn.eduke32.com/eduke32@8296 1a8010ca-5511-0410-912e-c29ae57300e0

# Conflicts:
#	source/build/src/defs.cpp
---
 source/build/src/defs.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/source/build/src/defs.cpp b/source/build/src/defs.cpp
index 85f759bc2..0d0577e4f 100644
--- a/source/build/src/defs.cpp
+++ b/source/build/src/defs.cpp
@@ -650,7 +650,8 @@ static int32_t defsparser(scriptfile *script)
             int32_t havexoffset = 0, haveyoffset = 0, haveextra = 0;
             int32_t xoffset = 0, yoffset = 0;
             int32_t istexture = 0;
-            int32_t tilecrc = 0, origcrc = 0;
+            int32_t tilecrc = 0;
+            uint8_t have_ifcrc = 0;
             int32_t extra = 0;
 
             static const tokenlist tilefromtexturetokens[] =
@@ -695,6 +696,7 @@ static int32_t defsparser(scriptfile *script)
                     break;
                 case T_IFCRC:
                     scriptfile_getsymbol(script, &tilecrc);
+                    have_ifcrc = 1;
                     break;
                 case T_TEXHITSCAN:
                     flags |= PICANM_TEXHITSCAN_BIT;
@@ -721,9 +723,9 @@ static int32_t defsparser(scriptfile *script)
                 break;
             }
 
-            if (tilecrc)
+            if (have_ifcrc)
             {
-                origcrc = tileCRC(tile);
+                int32_t origcrc = tileCRC(tile);
                 if (origcrc != tilecrc)
                 {
                     //initprintf("CRC of tile %d doesn't match! CRC: %d, Expected: %d\n", tile, origcrc, tilecrc);